"Un articulate" refers to someone who is unable to express their thoughts or ideas clearly and effectively. There are several synonyms for this word, including inarticulate, incoherent, unintelligible, unclear, muddled, and jumbled. These words all describe someone who struggles to communicate their ideas in a clear and concise manner. People who are un articulate may have difficulty with their speech, struggle with public speaking, or have trouble organizing their thoughts. Using synonyms for "un articulate" can help you to describe someone's communication skills more effectively, and can help others to understand their struggles with language and expression.